High severity7.5NVD Advisory· Published Apr 27, 2026· Updated Aug 13, 2026
CVE-2026-3087
CVE-2026-3087
Description
If shutil.unpack_archive() is given a ZIP archive with an absolute Windows path containing a drive (C:\\...) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
14- osv-coords3 versions
< 3.10.21+ 2 more
- (no CPE)range: < 3.10.21
- (no CPE)range: < 3.10.21
- (no CPE)range: < 3.10.21
(expand)+ 10 more
- (no CPE)
- (no CPE)
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*range: <=3.14.4
- cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha8:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
14- github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8cnvdPatch
- github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cbnvdPatch
- github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94nvdPatch
- github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840nvdPatch
- github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fdnvdPatch
- github.com/python/cpython/commit/ba0aca3bffce431fe2fbd53ca4cd6a717a2e2c19nvdPatch
- github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4nvdPatch
- github.com/python/cpython/pull/146591nvdIssue TrackingPatch
- github.com/python/cpython/issues/146581nvdExploitIssue TrackingPatchVendor Advisory
- www.openwall.com/lists/oss-security/2026/04/28/9nvdMailing ListThird Party Advisory
- mail.python.org/archives/list/[email protected]/thread/X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4/nvdMailing ListVendor Advisory
- github.com/python/cpython/commit/1071290169f85c09cf767c1099564a9426cdc7e8nvd
- github.com/python/cpython/commit/7ef7dd0a74f47facd1fadcbc77f8fb03beb5eb4dnvd
- github.com/python/cpython/commit/a6650a2cdf0c49fb8ce0c982903aa2aa274beefenvd
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